HMF Quiet Core Insert

HMF Quiet Core Insert
HMF Quiet Core Insert

$29.99

Select your ATV to see if this exhaust fits
  • Description
  • 5 Reviews
  • 14 Questions
  • Fitment
Description
Item #HMF000G

The HMF Quiet Core is an insert made of 201 stainless steel and installs on most HMF exhausts in seconds. It's designed for sound sensitive riding areas and decreases the sound level approximately 3 - 6dB.

Quiet Core fits the the following HMF exhausts:

  • Peformance Series.
  • Swamp and Swamp XL Series.
  • Penland Series (Torque Range Modifier removed).
  • Signature X Series.

Notes: Do NOT use with street bike exhausts; higher RPMs can lead to exhaust issues. HMF recommends re-jetting the exhaust whenever a Quiet Core is installed. Failure to do so can lead to several problems and can damage the exhaust and void the warranty. You cannot use the Torque Range Modifier with a Quiet Core at the same time, only one can occupy the exhaust space.


Read More
5 Reviews
4.4 out of 5 stars
5 Star   3 4 Star   1 3 Star   1 2 Star   0 1 Star   0
JB72
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  

Great product. Easy to install.

Doug
Alabama
Durability   Ease of Installation   Performance   Power   Style  
Quiet

I dont have a dB reader/gauge so I can not give you the exact dB before and after instullation, but It made a noticable difference. I rejetted carb after instullation and did not notice a power loss on high or low end. Keep in mind you DO need a gasket or it will rattle. It changed the tone of the exhaust aswell but I like it better now than I did before.

MrNacho
Verified Purchaser
Puyallup, WA, USA
Durability   Ease of Installation   Performance   Power   Style  
Insert used on trx450er with HMF Performance Seri

Ordered this with HMF Performance Series pipe on my wife's 2006 trx 450er and it performed killer. We got Sound tested by the U.S. Forest Rangers last week at Coos Bay bay. the pipe with the power core insert registered 85db and the limit was 93db at the time.
the quad performed really well with this set up after being jetted with the dyno jet kit. it gave real strong performance over stock.

thesaint
Montana
Great product

Just what I was hoping for,quiet for the mountains,easy to pull if need be

TMex
Pasco, WA
It's quiet

I was on the fence with this purchase, but decided to go for it so I would have it in case I went somewhere with noise regs. In short, I could definitely tell the difference on my 660 Raptor. W/O the quiet core, the Raptor took off like a rocket. With the quiet core, it's still better than stock, but much more sedated. The product is very well made and installs in about 5 minutes. I'd give it more stars if it didn't suck as much power away. Good value for the money.


Read More
14 Questions
Answered:   14
Not Yet:   0
Trev
Q: Is the hmf competition exhaust, a sport series exhaust?
Over 6 months ago
MotoSportExpert
MotoSport Staff Expert
Over 6 months ago
A: No the quiet core will not work due to the competition inserts taking the place of it. If you have the stage 1 insert, it will drop the decibel levels more than a quiet core would. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Ulysses
Location: Miami, FL, USA
Q: Will this fix my 2006 Kawasaki Prairie KVF 360?
Over 8 months ago
MotoSportExpert
MotoSport Staff Expert
Over 8 months ago
A: This HMF Quiet Core Insert works with HMF sport series pipes only. If your have the stock exhaust on your 2006 Kawasaki Prairie KVF 360 it would not work. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
AKRenegade426
Location: Palmer, AK 99645, USA
Q: Will this work on the HMF Swamp Series XL pipes? I got an '07 Can-Am Renegade 800.?
Over 9 months ago
MotoSportExpert
Expert MotoSport Staff
Over 9 months ago
A: Yes this HMF Quiet Core Insert (6946006) fits:
Peformance Series
Swamp & Swamp XL Series
Penland Series (Torque Range Modifier removed)
Signature X Series
kevin
Q: Will this replace the stock baffle?
1 year 2 months ago
Have a honda 400ex with a kmf withour baffles will this help
MotoSportExpert
MotoSport Staff Expert
1 year 2 months ago
A: The HMF Quiet Core Insert works with the HMF sport series pipes only. The Stock baffle can be found in the OEM section for your 400EX.
http://www.motosport.com/atv/oem-parts/honda/
benny
Location: Dewhurst VIC 3808, Australia
Q: G'day, i have a stock standard LTZ400 2007, will this quiet core insert make a standard muffler even quieter? cheers ben?
1 year 2 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 2 months ago
A: It probably would if you could make it fit but the HMF Quiet Core Insert is designed for HMF sport series pipes only.
ajaustin617
Q: Will this fit the bill balance slip on?
1 year 4 months ago
MotoSportExpert
Top 1 Contributor
1 year 4 months ago
A: No. This is only for a HMF exhaust.
alex
Location: Indiana, USA
Q: Will this fit the HMF Performance Series Slip-On Exhaust?
1 year 5 months ago
i have performance jetted carbs and i don't know if i have to rejet if i have this because i'm new to all this and i bought my 660 raptor 2 months ago and i already have noise complaints plus I don't know if it fits
MotoSportExpert
Expert MotoSport Staff
1 year 5 months ago
A: Yes. The HMF Quiet Core insert installs on most HMF exhausts in seconds. It's designed for sound sensitive riding areas and decreases the sound level approximately 3-6dB. We recommend re-jetting the exhaust whenever a Quiet Core is installed. Failure to do so can lead to several problems and can damage the exhaust and void the warranty.
Kori
Location: Ma
Q: How much power will I lose of I use this?
1 year 6 months ago
MotoSportExpert
Top 1 Contributor
1 year 6 months ago
A: The internal combustion engine is very simply put a basic air pump. The more air/fuel you can pass through the intake and exhaust from the motor, the more power you will make. HP gains/losses are very subjective to gauge on any one or combination of performance parts. So using a quiet core will cut your power, but WILL allow you to ride if you are in a sensitive noise dB area.
Chris
Location: Suffolk , Virginia
Q: Will this fit the HMF Competition series exhaust?
2 years 2 months ago
MotoSportRyanT
MotoSport Staff Expert
2 years 2 months ago Location: Portland, OR, USA
A: Yes, this insert should work with your HMF Competition Series Exhaust on your 2003 Yamaha Warrior 350.
bigjon
Location: Jeanerette, LA 70544, USA
Q: What size is the insert tube outside diameter?
2 years 4 months ago
I have a after market muffler on it now with a 1 inch opening too loud in woods needs to quiet down the end is 4 inch dish shaped wondering if this would lip in my muffler
MotoSportRyanT
MotoSport Staff Expert
2 years 3 months ago Location: Portland, OR, USA
A: HMF Quiet Core Inserts work in all HMF sport series pipes. Unfortunately I do not have dimensions on this item. From what I can tell it will only work with HMF Brand Exhaust systems.
1-10 of 14

Read More
Fitment
See ATVs that Fit this Part

Read More